Device for controlling the displacement of an element, in particular of a seat or parts of a seat of a motor vehicle, in relation to a base
US4802374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Feb 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19828
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The control device comprises a motor (5) having a shaft (7a) provided at one end with a worm (8a) to drive a nut-wheel (9a), the set of the worm (8a) and of the nut-wheel (9a) forming part of a reduction gear (R). A screw (12a) cooperates with the nut (11a). This screw (12a) is fixed in rotation around its axis. The reduction gear (R) comprises a stirrup (26a) comprising two intersecting cylindrical sleeves (30a, 31a) communicating through an opening (W). One (30a) of these sleeves receives the nut-wheel (9a). The worm (8a) is accommodated in a tube (10a), connected to the casing (6) of the motor (5), which comprises a window (32a) on its cylindrical wall at one end intended to be engaged in the other sleeve. For the assembly of the reduction gear, the above mentioned end of the tube (10a) is fitted in the other sleeve (31a) of the stirrup (26a) so that the above mentioned window should come to be opposite the above mentioned opening (W). The threads of the worm (8a) project through the said window (32a) to mesh with the nut-wheel (9a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.